波谱学杂志2017，Vol.34Issue(4)：481-488,8.DOI:10.11938/cjmr20172567
一种铷原子频标频率综合器新方案的设计与实现
Design and Implementation of a New Frequency Synthesizer for Rubidium Atomic Frequency Standard
摘要
Abstract
Progresses have been made in the development of digitalized and miniaturized rubidium atomic frequency standard (RAFS). In the traditional RAFS circuits, the 6840 MHz microwave signal is mixed with the 5.3125 MHz signal generated by the frequency synthesizer to obtain 6834.6875 MHz microwave signal, which is used to excite rubidium atom transition. Early RAFS frequency synthesizer used a large number of discrete analog devices, and showed disadvantages such as low degree of digitization, complicated parameter optimization and large physical size. The direct digital synthesizer (DDS) scheme used currently generates the 5.3125 MHz signal directly, but often needs to multiply the 10 MHz signal. It has the disadvantages of low spectral purity and high phase noise. This paper introduces a digital frequency synthesizer solution that generates the 5.3125 MHz signal. The design eliminates the need for a 10 MHz multiplier circuit when using a DDS device. It has the advantages of high spectral purity, low phase noise and adjustable output frequency/phase.关键词
铷原子频标(RAFS)/频率综合器/直接数字频率合成器(DDS)/倍频Key words
rubidium atomic frequency standard (RAFS)/frequency synthesizer/direct digital synthesizer (DDS)/multiplier分类
数理科学引用本文复制引用
黄争,阎世栋,梅刚华,钟达..一种铷原子频标频率综合器新方案的设计与实现[J].波谱学杂志,2017,34(4):481-488,8.基金项目
国家重大科技专项项目. （）
